Every upcoming Half Marathon around Seattle, with start times, entry fees, finish-time stats from past editions, start-line maps, and the local run clubs to train with.
32 upcoming Half Marathon races found · 1 with finish-time stats
Seattle running is defined by contrast: flat waterfront paths along Elliott Bay and the Burke-Gilman Trail one day, steep bluff climbs through Discovery Park or Lincoln Park the next. Rain shapes the winter routine, layered and steady, while summer pulls the whole city outside when Mount Rainier appears above the Sound and the light on Lake Washington makes every loop feel longer than it is.
Group runs cluster around Myrtle Edwards Park, Green Lake, and Alki Beach, where paved trails, post-run coffee, and views of the Olympic Mountains make the social side of training as easy as the logistics. That same mix of urban grit and wild-feeling parkland is what gives Seattle half marathon training its particular texture.
By the numbers
The Biggest and Longest-Running
The Seattle races that stand out on the numbers: the biggest field, and the longest unbroken run of editions.
How we calculate these stats: RunSesh calculates these figures from the most recent published results of past editions, sourced from RunSignup. We show aggregates only: field size, winning and median times, and the cutoff. We never publish individual finisher tables. Last updated Jul 27, 2026.
Common Questions About Running a Half Marathon in Seattle
What does a Seattle half marathon typically cost, and does it get more expensive the longer I wait?
Entry fees here run from $30 on the low end to $150 at the top. At least 1 race has a price increase already scheduled, so if you have your eye on a specific event, earlier registration can save you money. Many of the $30 options also include a shirt, so the lower-priced races are not stripped-down experiences.
What finish time should I expect if I run one of these Seattle half marathons?
The Brooks Orca Half Marathon is the one race here with published results. Across its 1,007-finisher field, the median finish time was 2:11:12. That is a single race on a single course, walkers and all abilities included, so treat it as a reference point rather than a universal standard for Seattle half marathons.
When do most Seattle half marathons take place?
Fall is the busiest stretch, with 14 races running September through November. If your training block peaks in summer, August has the most races of any single month with 5 options. Winter still has races if you do not mind the weather - February is the quietest month but not empty.
Will I get a shirt at a Seattle half marathon?
Every one of the 31 races here says it gives a shirt. That is unusually consistent - you will not need to hunt the fine print to find out whether one is included.
Where can I find people to train with in Seattle?
Seattle has a deep bench of running clubs: Club Northwest, Seattle Running Club, West Seattle Running Club, Cowgill Trail Collective, Club Seattle Runners Division, Eastside Runners Club, Seattle Running Collective, and Seattle Front Runners all operate in the area. Whether you want waterfront miles along Alki or wooded loops through the Arboretum, at least one of these groups almost certainly meets near your route.
